What is CVE-2026-89814?

CVE-2026-89814 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.14.9 onward and patched in 6.18.51, 7.2.5 and 7.3-rc1. CVE-2026-89814 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-89814?

CVE-2026-89814 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-89814?

Yes, CVE-2026-89814 has been patched. Fixed versions include 6.18.51, 7.2.5 and 7.3-rc1. If you are running Linux kernel 6.14.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-89814 actively exploited?

CVE-2026-89814 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-89814

High

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: clamp the isolation index for rings outside a partition adev->isolation[] has one slot per partition, but a ring that is not assigned to one keeps AMDGPU_XCP_NO_PARTITION, which is ~0, so indexing the array with it is out of bounds. SDMA submissions hit this on both the isolation enforcement and the VM flush path and trip UBSAN. Fall back to the first slot the way the cleaner shader path already does, and stop taking the address before the ring type check that makes it relevant.

Package Linux Kernel

Published 2026-09-16

Last modified 2026-09-17

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected versions

Linux kernel versions 6.14.9, 6.15 and later are affected. Fixed in 6.18.51, 7.2.5, 7.3-rc1 and their respective stable series.

Affected from

≥ 6.14.9 ≥ 6.15

Fixed in

✓ 6.18.51 6.18.x ✓ 7.2.5 7.2.x ✓ 7.3-rc1

References

3 total

Details

CVE ID CVE-2026-89814

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-09-16

Modified 2026-09-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-89814?

CVE-2026-89814 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.14.9 onward and has been patched in 6.18.51, 7.2.5 and 7.3-rc1. CVE-2026-89814 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-89814?

CVE-2026-89814 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-89814?

Yes. CVE-2026-89814 has been patched. Fixed versions include 6.18.51, 7.2.5 and 7.3-rc1. If you are running Linux kernel 6.14.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-89814 actively exploited?

No. CVE-2026-89814 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.